How to use OpenCV to process image

asked 2016-03-07 02:49:36 -0500

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Hi! Everyone!

I'm a beginner of ROS, and now I've been focusing on imaging processing on ROS, My robot is Turtlebot, and I use the kinect as the camera, so basically what I need to do is to find the changes in the same background, so I followed the tutorials and started to use Gazebo now, and I tested the kinect all is fine. So my question is, I am pretty lost since there is no example or demo for image processing on wiki, I am wondering what is my first step? and what should I do after that.

If there is any good website for image processing on ROS to follow, that would be perfect! Thank you so much!

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may I know how you are getting images? are you using pictures or video stream? let me know about these and then I'll guide you for ROS and OpenCV image processing.

PKumars ( 2016-03-07 03:54:26 -0500 )edit

I got the video stream from Kinect, and I need to capture one pic using an order, every time I sent an order, one pic is captured. So what I need to do is to do the rest job upon the pic.

Henschel.X ( 2016-03-07 20:48:45 -0500 )edit

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Thank you very much! I know what you mean, It's like I need to write a node using OpenCV library to change ROS image first and I can do the image processing after this step in the node right? I prefer C++, so which means all of these should be done by cpp file is that right?

Henschel.X ( 2016-03-07 20:43:23 -0500 )edit

I'm assuming you're using the image transport system and a camera to get your images. You'll need to use the ROS cv_bridge object to convert the image into a cv::Mat image. From here you'll be able to use the significant power of openCV to process your image. All of this can be done in C++

PeteBlackerThe3rd ( 2016-03-08 07:24:07 -0500 )edit

Thank you so much!!!! You saved me!

Henschel.X ( 2016-03-08 19:42:10 -0500 )edit

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How to use OpenCV to process image

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